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constellation: Proxy ScrollState through the Constellation (#36062)

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This will allow removing the dependency of the compositor on
`script_traits`, which should make our internal dependency chain a lot
easier to deal with.

Part of #35984.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson 2025-03-21 13:09:01 +01:00 • committed by GitHub
parent ec20d9a3d7
commit 1f232eb17c
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10 changed files with 60 additions and 33 deletions
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12
components/shared/webrender/lib.rs
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@ -14,13 +14,14 @@ use std::sync::{Arc, Mutex};
use base::id::{PipelineId, WebViewId};
use display_list::{CompositorDisplayListInfo, ScrollTreeNodeId};
use embedder_traits::Cursor;
use euclid::Vector2D;
use euclid::default::Size2D as UntypedSize2D;
use ipc_channel::ipc::{self, IpcSender, IpcSharedMemory};
use libc::c_void;
use log::warn;
use serde::{Deserialize, Deserializer, Serialize, Serializer};
use servo_geometry::{DeviceIndependentIntRect, DeviceIndependentIntSize};
use webrender_api::units::{DevicePoint, LayoutPoint, TexelRect};
use webrender_api::units::{DevicePoint, LayoutPixel, LayoutPoint, TexelRect};
use webrender_api::{
BuiltDisplayList, BuiltDisplayListDescriptor, ExternalImage, ExternalImageData,
ExternalImageHandler, ExternalImageId, ExternalImageSource, ExternalScrollId,
@ -530,3 +531,12 @@ pub struct CompositorHitTestResult {
/// The scroll tree node associated with this hit test item.
pub scroll_tree_node: ScrollTreeNodeId,
}
/// The scroll state of a stacking context.
#[derive(Clone, Copy, Debug, Deserialize, PartialEq, Serialize)]
pub struct ScrollState {
/// The ID of the scroll root.
pub scroll_id: ExternalScrollId,
/// The scrolling offset of this stacking context.
pub scroll_offset: Vector2D<f32, LayoutPixel>,
}